Ministerial correspondence and diaries
Following on from before, this is why the Foreign Office refused to disclose logs of ministerial correspondence which list the authors or recipients of letters to or from ministers, their subjects and dates:
"Release of the logs would permit analysis of the importance given to certain issues and the time taken to reply on particular subjects or to particular people. This exposure would restrict the ability of Private Office staff and Ministers themselves to handle business according to their assessment of the priorities, which would be against the public interest."
And this is why the Department for Constitutional Affairs would not disclose a list of diary appointments for the Secretary of State and the Permanent Secretary:
"Disclosure of all meetings with stakeholders and external experts may lead to greater pressure and increased expectation for a Secretary of State or Permanent Secretary to meet with others to the detriment of the effective conduct of public affairs."